PlainPatent
USPTO 2015–2025 USPTO PatentsView US Corporation

Yangtze Railroad Materials

USPTO PatentsView assignee record - 6 granted patents across 3 technology areas, active 2017–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: E01B (PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS).

Explore the portfolio See the ranking
6
Total patents granted
3
CPC technology areas
9.7
Avg claims per patent
-50%
5-year filing velocity

The verdict

Yangtze holds 6 US patents across 3 technology areas, rank #44,165 of 50,000 tracked assignees.

#44,165
of 50,000 US assignees by volume
Top 91%
by Innovation Score (22.0/100)
9.7
avg claims per patent
-50%
filing velocity, last 5 yrs

Portfolio overview

Yangtze Railroad Materials has been granted 6 US utility patents between 2017 and 2024, placing Yangtze Railroad Materials at rank #44,165 across all assignees tracked by PlainPatent. This portfolio spans 3 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.7 claims per patent with primary concentration in E01B (PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS). As a US Corporation, Yangtze Railroad Materials is one of the more focused assignees in the PatentsView dataset. By volume, Yangtze sits between Yuanchu Technology (beijing) Co., Ltd. (6 patents, rank #44,161) and Yellow Sea Fisheries Research Institute, Chinese Academy Of Fishery Sciences (6 patents, rank #44,169) - the closest US assignees by grant volume. The composite Innovation Score of 22.0/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 2 grants, compared with 4 in the 2015–2019 window, a -50% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The US Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Yangtze Railroad Materials's 9.7 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while specialization in 3 subclasses reflects a tightly scoped invention area. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Yangtze Railroad Materials against peers pursuing similar technology classes.

Who files at Yangtze's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

What this shows Yangtze holds 6 patents at rank #44,165, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Source USPTO PatentsView, granted utility patents As of 2015–2025

Companies ranked near Yangtze

By rank, the assignees closest to #44,165 in granted patent volume.

Leaders in E01B (Permanent WAY)

Other assignees with the most granted patents in Yangtze's primary technology class.

Yangtze's Innovation Score vs. every tracked assignee

Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)

22 Top 91% higher than 9% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). Below this entry. 20–30: 13,162 US assignees (26%). This entry sits in this band. 30–40: 15,294 US assignees (31%). Above this entry. 40–50: 11,491 US assignees (23%). Above this entry. 50–60: 5,058 US assignees (10%). Above this entry. 60–70: 1,537 US assignees (3%). Above this entry. 70–80: 234 US assignees (0%). Above this entry. 80–90: 10 US assignees (0%). Above this entry. 90–100: 0 US assignees (0%). Above this entry. This assignee 0 100 every tracked assignee, bucketed by value

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

0.511.522.533.5 2017201920202024 1
USPTO utility patent grants by year · 2017–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table
Yangtze Railroad Materials patent grants by year, 2015–2025
Year Patents Granted Share of Period
2017 3 50.0%
2019 1 16.7%
2020 1 16.7%
2024 1 16.7%

Which technologies does Yangtze Railroad Materials patent most?

Top 3 of 3 technology areas

Patent Moat Analysis

Portfolio Volume Light
Tech Breadth Specialized
Claim Depth Simple
Velocity Declining

Where it ranks

Overall rank by patents

#44,165

Across all tracked assignees

Innovation Score

22.0 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Yangtze Railroad Materials hold?
Yangtze Railroad Materials holds 6 US granted patents filed between 2017 and 2024, spanning 3 technology areas.
What is Yangtze Railroad Materials's Innovation Score?
Yangtze Railroad Materials has an Innovation Score of 22.0 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does Yangtze Railroad Materials focus on?
Yangtze Railroad Materials's top technology area is E01B (PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS) with 2 patents. The company has filed patents in 3 CPC subclasses total.
Is Yangtze Railroad Materials's patent filing rate increasing or decreasing?
Yangtze Railroad Materials's recent filing velocity is -50% compared to the prior five-year period. Filing activity has slowed relative to earlier years.
What does claim depth mean for Yangtze Railroad Materials's patents?
Yangtze Railroad Materials's patents average 9.7 claims each. This is relatively simple claim structure, typical for focused inventions.
How is the Yangtze Railroad Materials patent data sourced?
All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

How to use this portfolio

Yangtze's 6 grants land it in the top 91% by Innovation Score, but volume alone doesn't tell you where the strength sits.

  • Read that count against the largest US assignees before treating it as dominance - Yangtze ranks #44,165 of 50,000. Top 50 holders
  • Most of this portfolio concentrates in E01B - see who else leads that technology area. E01B leaders
  • Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page
  • USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
  • Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
  • USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.